% [value, text, raw] = xlsread('Book1.xlsx',1); %CPI
% [value, text, raw] = xlsread('Book1.xlsx',2); %trading balance
% [value, text, raw] = xlsread('Book1.xlsx',3); %liquidity
% [value, text, raw] = xlsread('Book1.xlsx',4); %bad debt -- NOTE: 27 records only
% 
% % [ACF, lags, bounds] = autocorr(value, []) 
% 
% % autocorr(value)
% figure(1);
% % parcorr(v)
% subplot(2,2,1);autocorr(value,[])
% title('Auto Correlation - raw value')
% 
% subplot(2,2,2);parcorr(value)
% title('Partial Correlation - raw value')
% 
% ret = value(2:end) - value(1:end-1);
% subplot(2,2,3);autocorr(ret)
% title('Auto Correlation - return')
% 
% subplot(2,2,4);parcorr(ret) 
% title('Partial Correlation - return')

%%
[value, text, raw] = xlsread('VNIBOR.xlsx',6); %bad debt -- NOTE: 27 records only

